Flame Sensor Or Fire Ignition Sensor Module 4 pin_x000D_\n_x000D_\nProduct Description:-_x000D_\n_x000D_\n1) Can detect the flame or wavelength at 760 nm to 760 nm range of light, the lighter the test flame distance is 80 cm, on the flame, the greater the distance test_x000D_\n_x000D_\n2) The detection Angle of 60 degrees or so, particularly sensitive to the flame spectrum_x000D_\n_x000D_\n3) The sensitivity adjustable digital potentiometer to adjust (blue)_x000D_\n_x000D_\n4) The comparator output, signal clean, good waveform, driving ability is strong, for more than 15 ma_x000D_\n_x000D_\n5) With adjustable precision potentiometer sensitivity adjustment_x000D_\n_x000D_\n6) The working voltage of 3.3 V to 5 V_x000D_\n_x000D_\n7) Output form: digital switch output (0 and 1)_x000D_\n_x000D_\n8) Has a fixed bolt hole, convenient installation_x000D_\n_x000D_\n9) Small board PCB size: 3.2 cm x 1.4 cm_x000D_\n_x000D_\n10) use the LM393 wide voltage comparator